Key result
Genetic screening of 485 Japanese LQTS probands identified two KCNE3 missense mutations, with the p.R99lambdaH mutation significantly reducing outward potassium current compared to wild-type.
Why the study?
Are KCNE3 mutations present in patients with Long QT syndrome and do they affect potassium channel function?
Observational (n=485)
Are KCNE3 mutations present in patients with Long QT syndrome and do they affect potassium channel function?
This is the first report linking KCNE3 mutations to Long QT syndrome, demonstrating that the p.R99lambdaH mutation significantly reduces repolarizing potassium current.
No takes yet. Share an insight, caveat, or question.
KCNE3 variants may explain some unexplained LQTS cases; leaves open causality and testing utility pending replication.
Ohno et al. (2009) conducted an observational in Long QT syndrome (LQTS) (n=485). KCNE3 mutations vs. Wild-type KCNE3 was evaluated on Functional effects on outward potassium current. Genetic screening of 485 Japanese LQTS probands identified two KCNE3 missense mutations, with the p.R99lambdaH mutation significantly reducing outward potassium current compared to wild-type.
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